NDLI: Optimization of fiber-coupled laser-diode end-pumped lasers: influence of pump-beam quality

Content Provider	IEEE Xplore Digital Library
Author	Chen, Y.F. Liao, T.S. Kao, C.F. Huang, T.M. Lin, K.H. Wang, S.C.
Copyright Year	1965
Abstract	A general model has been developed for the optimization of fiber-coupled laser-diode pumped lasers by including the effect of pump-beam quality into the mode-overlap integrals. The numerical results of the mode-overlap integrals have been fitted to an analytical function of pump spot size, laser mode size and the parameter /spl beta/, which is in terms of laser-diode beam quality and properties of the active medium. This analytical function allowed us to obtain explicit formulae for the threshold pump power, the slope efficiency, and the optimum pump spot size. With these formulae, the optimum mode size and the maximum output efficiency can be easily calculated for arbitrary values of /spl beta/ and input power. From the numerical results, we obtained an analytical expression to relate the required input power and pump-beam quality to the desired output efficiency and properties of an active medium. The present model provides a straightforward procedure to design the laser resonator and the optical coupling system for optimization. To illustrate the utility of the present model, a Nd:YAG laser pumped by fiber-coupled laser diodes is considered and optimized.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	2010
Ending Page	2016
Page Count	7
File Size	764611
File Format	PDF
ISSN	00189197
Volume Number	32
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fiber lasers Laser modes Pump lasers Laser excitation Power system modeling Laser beams Optical design Optical resonators Optical coupling Design optimization
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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